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Notes on a graft-hybrid

Abstract

Recently Mr. Osborne, the fruit expert in the Agricultural Department, handed me an apple of which one-half was typical Roman Beauty and the other as surely Senator. There was no blending ; the division was longitudinal through the median plane and as clearly defined as it was possible to be. The apple was grown in the orchard of Mr. Bourne, Premaydena, South-East Tasmania. The following note is sent with it from Mr. Ward, assistant fruit instructor:— "The apple was picked from a Roman Beauty tree which had been grafted on a Senator stock. The tree is young, as far as I know seven or eight years old. This was the only apple of its kind on the tree." Judging from its history and appearance there seems little escape from the conclusion that this is a genuine case of graft hybridism. Reversion would not have given us a fruit with such a well-marked distinction of character in the two halves. Cross-fertilisation has not yet demonstrated more than at most a slight general influence

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